2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
10 /* Daemon that implements remote procedure call service for non-vendor system
11 * calls (currently setpag and pioctl). The AFS cache manager daemon, afsd,
12 * currently fires up this module, when the "-rmtsys" flag is given.
13 * This module resides in the lib/afs/librmtsys.a library.
15 #include <afsconfig.h>
16 #include <afs/param.h>
20 #include <sys/types.h>
21 #include <sys/ioctl.h>
24 #include <netinet/in.h>
33 /*#include <afs/cellconfig.h>*/
36 extern int errno; /* We ship this over the net if needed */
37 extern RMTSYS_ExecuteRequest();
39 #define NFS_EXPORTER 1 /* To probably handle more later */
40 #define PSETPAG 110 /* Also defined in afs/afs_pioctl.c */
41 #define PIOCTL_HEADER 6 /* # of words prepended to special pioctl */
42 #define PSetClientContext 99 /* Sets up caller's creds */
43 #define N_SECURITY_OBJECTS 1 /* No real security yet */
45 #define SETCLIENTCONTEXT(BLOB, host, uid, group0, group1, cmd, exportertype) { \
48 (BLOB)[2] = (group0); \
49 (BLOB)[3] = (group1); \
51 (BLOB)[5] = (exportertype); \
55 /* Main routine of the remote AFS system call server. The calling process will
56 * never return; this is currently called from afsd (when "-rmtsys" is passed
59 /* void catchsig(int); */
60 struct rx_securityClass *(securityObjects[N_SECURITY_OBJECTS]);
61 struct rx_service *service;
64 * Ignore SIGHUP signal since apparently is sent to the processes that
65 * start up from /etc/rc for some systems like hpux and aix3.1...
67 signal(SIGHUP, SIG_IGN);
69 /* Initialize the rx-based RMTSYS server */
70 if (rx_Init(htons(AFSCONF_RMTSYSPORT)) < 0)
72 securityObjects[0] = rxnull_NewServerSecurityObject();
73 if (securityObjects[0] == (struct rx_securityClass *) 0)
74 rmt_Quit("rxnull_NewServerSecurityObject");
75 service = rx_NewService(0, RMTSYS_SERVICEID, AFSCONF_RMTSYSSERVICE,
76 securityObjects, N_SECURITY_OBJECTS,
77 RMTSYS_ExecuteRequest);
78 if (service == (struct rx_service *) 0)
79 rmt_Quit("rx_NewService");
80 /* One may wish to tune some default RX params for better performance
82 rx_SetMaxProcs(service, 2);
83 rx_StartServer(1); /* Donate this process to the server process pool */
87 /* Implements the remote setpag(2) call. Note that unlike the standard call,
88 * here we also get back the new pag value; we need this so that the caller
89 * can add it to its group list via setgroups() */
90 afs_int32 SRMTSYS_SetPag(call, creds, newpag, errornumber)
93 afs_int32 *newpag, *errornumber;
95 afs_uint32 blob[PIOCTL_HEADER];
96 struct ViceIoctl data;
97 register afs_int32 error;
100 SETCLIENTCONTEXT(blob, rx_HostOf(call->conn->peer), creds->uid,
101 creds->group0, creds->group1, PSETPAG, NFS_EXPORTER);
102 data.in = (caddr_t) blob;
103 data.in_size = sizeof (blob);
104 data.out = (caddr_t) blob;
105 data.out_size = sizeof (blob);
106 /* force local pioctl call */
107 error = lpioctl(0, _VICEIOCTL(PSetClientContext), &data, 1);
109 if (errno == PSETPAG) {
110 *newpag = blob[0]; /* new pag value */
112 *errornumber = errno;
118 /* Implements the remote pioctl(2) call */
119 afs_int32 SRMTSYS_Pioctl(call, creds, path, cmd, follow, InData, OutData, errornumber)
120 struct rx_call *call;
122 afs_int32 cmd, follow, *errornumber;
124 rmtbulk *InData, *OutData;
126 register afs_int32 error;
127 struct ViceIoctl data;
129 afs_uint32 blob[PIOCTL_HEADER];
132 SETCLIENTCONTEXT(blob, rx_HostOf(call->conn->peer), creds->uid,
133 creds->group0, creds->group1, cmd, NFS_EXPORTER);
134 data.in = (char *)malloc(InData->rmtbulk_len + PIOCTL_HEADER*sizeof(afs_int32));
135 if (!data.in) return (-1); /* helpless here */
136 if (!strcmp(path, NIL_PATHP)) pathp = (char *)0; /* It meant to be NIL */
137 memcpy(data.in, blob, sizeof(blob));
138 inparam_conversion(cmd, InData->rmtbulk_val, 1);
139 memcpy(data.in+sizeof(blob), InData->rmtbulk_val, InData->rmtbulk_len);
140 data.in_size = InData->rmtbulk_len + PIOCTL_HEADER*sizeof(afs_int32);
141 data.out = OutData->rmtbulk_val;
142 data.out_size = OutData->rmtbulk_len;
143 /* force local pioctl call */
144 error = lpioctl(pathp, _VICEIOCTL(PSetClientContext), &data, follow);
146 *errornumber = errno;
148 /* Send the results back in network order */
149 outparam_conversion(cmd, data.out, 0);
152 /* Note that we return success (i.e. 0) even when pioctl fails; that's
153 * because the actual errno is passed back via 'errornumber' and this call
154 * MUST return success error in order to get that OUT params back (YUCK!)
162 fprintf(stderr, msg, a, b);